Interlocking device for magnet-armatures.



F. w. KULICKE. J INIERLOCKING DEVICE FOR MAGNET MIATUIES.

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FREDERICK W. KULICKE, 0F PHILADELPHIA, PENNSYLVANIA.

IN TERLOCKIN G DEVICE FOR MAGNET-ABMATURES.

Specification of Letters Patent.

Patented Nov. 27, 1917.

Application filed April 14, 1916. Serial No. 91,034.

To all whom it may concern.

Be it known that I, FREDERICK W. KU- Lions, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Interlocking Devices for Magnet-armatures, whereof the following is a specification, reference being had to the accompanying drawings.

The invention relates to interlocking devices for armatures for electro-magnets and particularly to devices in which a pair of electro-magnets and armatures are employed.

It is one object of my invention to provide a pair of armatures so related that when one is attracted to its magnet, the other is released and to provide means for locking the parts in this position until the other magnet has in turn been energized. In this way it is possible to utilize the armatures to maintain continuouscircuits by merely temporarily energizing the proper magnet.

To this end I employ armatures so mounted as to naturally tend to swing away from their respective magnets, and a system of levers adapted to cooperate with them, so arranged that when one armature is attracted by its magnet, the levers are moved into a position to allow the other armature to swing away from its magnet. I further provide that the other armature in swinging away from its magnet locks the levers in this position, holding them in it until the second magnet has in turn been energized, when the position of the parts is reversed.

Referring to the accompanying drawings, Figure I, is a plan view of a device conveniently illustratin my invention.

Fig. II, is a si e elevation of the same.

Fig. III, is a cross section, the planeof which is indicated by the arrows III-III in Fig. I.

Fig. IV, is a perspective view showin the magnets and the relation of the inter ocking device with respect to the magnet armatures.

Mounted on any suitable base 1, are electro-magnets 2, and 3. These magnets are provided with terminals 4, and 5, respectively, by means of which they may be con nected in any desired circuits. Pivoted at 6, and 7, are armatures 8-, and 9, adapted to cooperate with magnets 2, and 3, respectively, but so mounted as to normally tend to swing away from the magnets under the influence of gravity until they come in contact with stops 14:, and assume the position taken by armature 9, in the drawings. These armatures are provided with lugs 10, and 11, respectively, and bosses 12, and 13.

The mechanism by which the action of.

the armatures is interrelated comprises a rock shaft 15, loosely mounted in bearing 16, which is in turn securely attached to base 1, and arms 17, and 20. Arm 17, is firmly affixed to one end of shaft 15, and provided with a slot 18, adapted to engage pin 19, mounted in lug 11. Arm 20, is mounted on the other end of rock shaft 15, and secured by means of a clamp screw 21. End 27, of arm 20, is beveled to engage plate 2 1, on armature 8. Plate 24, is formed with a curved upper edge 25, and a flat lower edge 26, and is adj ustably mounted on boss 12, of armature 8, by means of screws 22, which pass through slots 23, in the said plate, and is adapted to cooperate with end 27, of lever 20. By loosening screw 21, it is possible to vary the angle between arms 20, and 17 and in this way to regulate the relationship between armatures 8, and 9, and also to compensate for wear in the parts.

In order that this mechanism may oper* ate as a locking device, the angle between the two arms is adjusted so that when arm 17, is in its lower position, as best shown in Fig. IV, armature 9, being away from its magnet, end 27, of arm 20, is in enga ement with lower edge 26, of plate 24, t ereby holding armature 8, in the position it occupies when magnet 2, is energized. When, however, magnet 3, is energized, armature 9, is attracted and raised to its upper position, so that pin 19, in engagement with slot 18, raises arm 17, thereby in turn causing a similar movement of arm 20. When end 27, is moved beyond the point of enga ement with edge 26, armature 8, is free to fal away from magnet 2. Unless magnet 2, is energized at this time, armature 8, drops away at once and in so doing brings plate 24, beneath arm 20, upper edge 25, coming into engagement with the lower surface of end 27. Arm 20, is thereby locked in this releasing position. Arm 17, is, therefore, also held in its upper position and by means'of its engagement with pin 19, holds armature 9, against magnet 3, The parts remain in this position until magnet 2, is energized attracting armature 8, and withdrawing plate 24, from beneath arm 20. As soon as this happens, arm 20, is free to drop from its releasing position to its lower locking position. The weight of the armature, which falls away from magnet 3, however, cooperates with the'weight of the arms, so that the instant edge25, is moved out of engagement with end'. 27, arm 20, drops, bringing end 27, into engagement with lower edge 26, of plate 24, thereby locking armature 9, in position against magnet 3. The parts are then again in the position shown in Fig. IV, and remain so until magnet 3, is energized.

Armatures 8, and 9, carry bridging contacts 30, and 31, respectively, but are suitably insulated therefrom at 32, and 33. These contacts are adapted to bridge the terminal plates 38, and 39, when the respective armatures swing away from their magnets. The terminal plates may be conveniently mounted on. an insulating strip 45, supported by appropriate standards 6L6, and 47, mounted on either side of base 1. This is, however, entirely a matter of convenience, as one or both of the contacts may, if desired, be mounted on strip 49, and the bridging contacts arranged to close the circuits when the armatures are attracted by their respective magnets.

In operation magnets 2, and 3, are connected with their controlling circuits throu h terminals 4, and 5, and the circuits to be governed are connected through terminal plates 38, and 39. If the parts occupy the position shown in the drawings, the circuit controlled by terminal plates 39, is closed, and continues so until magnet 3, is energized. But as soon as magnet 3, is energized, though only momentarily, armature 9, is attracted, breaking the circuit. By the same action arm 20, is raised to its releasing position, allowing armature 8, to fall away from magnet 2, locking armature 9, against magnet 3, and closing the circuit terminating in plates 38. The parts remain in this position until magnet 2, is energized, when they again take the position shown in the drawings, and are locked in that position as described.

In this way it is possible to close a circuit and have it remain closed, by merely making a momentary contact, and to break the circuit and have it remain open, by another momentary contact. Such a device is particularly useful in connection with signaling devices such as are used in connection with street railways and the like.

Having thus described my invention, I claim:

1. The combination with a pair of electromagnets, of armatures adapted to cooperate with said electromagnets but so mounted as to normally tend to move away from their respective electromagnets, a rock shaft, connecting means between the shaft and one of said armatures, whereby the motion of the armature is transmitted to the shaft, interengaging means between the shaft and the other armature comprising a member moving with the shaft and a member moving with the armature, the member moving with the shaft being adapted to lock the armaturein its attracted position, and the member moving with the armature being adapted to lock the shaft member in releasing position, the relation between the members being such that one of said armatures is held in its attracted position and the other released.

The combination with a pair of electromagnets, of armatures adapted to cooperate with said electromagnets but so mounted as to normally tend to move away from their respective electromagnets, a rock shaft, connecting means between the shaft and one of said armatures, including a lever. attached to and moving with said shaft, and a lug mounted on said armature, whereby. the motion of the armature is transmitted to the shaft, inter-engaging means between the shaft and the other armature comprising a member moving with the shaft and a member moving with the armature, the member moving with the shaft being adapted to lock the armature in its attracted position, and the member moving with the armature being adapted to hold the shaft member in releasing position, whereby the shaft is locked from rotation and the first mentioned armature held in its attracted position when the other armature is released.

3. The combination with a pair of electromagnets, of armatures adapted to cooperate with said electromagnets, but so mounted as to normally tend to move away from their respective electromagnets, a rock shaft, connecting means between the shaft and one of said armatures, whereby the motion of the armature is transmitted to the shaft; a lever attached to said shaft and moving therewith, and a plate adjustably mounted on the other of said armatures, said plate having a flat edge and a curved edge adapted to cooperate with the end of said lever, whereby the armature is held by the lever in its at tracted position when the first mentioned armature is released.

4:. The combination with a pair of e1ectromagnets, of armatures adapted to cooperate with said electromagnets but so mounted as to normally tend to move away from their respective electromagnets, a rock shaft, connecting means between the shaft and one of said armatures, including a lever attached to said shaft and moving therewith, and a lug mounted on said armature, whereby the motion of the armature is transmitted to the shaft; a second lever attached to said shaft and moving therewith, and a plate adjustably mounted on the other of said armatures, said plate having a flat edge and a curved edge adapted to cooperate with the end of said lever, whereby the armature is held by the"lever in its attracted position when the. first mentioned armature is released, the relation between the levers being such that one of said armatures is held in its attracted position and the other released.

5. The combination with a pair of electromagnets, of armatures adapted to cooperate v with said electromagnets but so mounted as to normally tend to move away from their respective electromagnets, a rock shaft, a lever attached to said shaft and moving therewith; connecting means between the lever and said armature, whereby the motion of the armature is transmitted to the shaft and the armature may be held in its attracted position or released; a second lever attached to said shaft and moving therewith, adapted to cooperate with the other of said armatures, whereby the armature may be held in its attracted position or released, and means for adjusting the positions of the levers on the shaft, whereby they may be maintained in such relationship that one of said armatures is always held in its at tracted position and the other released.

6. The combination of a pair of electrolnagnets, armatures adapted to cooperate with said electro-magnets, but so mounted as to normally tend to swing away from their respective electro-magnets, one of said arma- Oopiea of this patent may be obtained or tures being provided with a lug and a pin projecting therefrom and the other with a projecting plate, a rock shaft,"a lever rigidly attached to one end of said rock shaft, a slot in said lever adapted to engagesaid pin, and a lever attached to the other end of said rock shaft, adapted to engage said projecting plate, said levers being so adjusted as to always hold one of said 'armatures against its respective electro-magnet.

7. The combination of a pair of electromagnets, armatures adapted to cooperate with said electro-magnets, but so mounted as to normally tend to swing away from their respective electro-magnets, one of said armatures being provided with a lug and a pin projecting therefrom and the other with a projecting plate, a rock shaft, a lever rigidly attached to one end of said rock shaft, a slot in said lever adapted to engage said pin; a lever attached to the other end of said rock shaft adapted to engage said projecting plate; said levers being so adjusted as to always hold one of said armatures against its respective electro-magnet, and means for adjusting the relation between said levers.

In testimony whereof, I have hereunto signed my name at Philadelphia, Pennsylvania, this eleventh day of April, 1916.

FREDERICK W. KULICKE.

Witnesses:

JAMES H. BELL, E. L. FULLERTON.

five cents each, by addressing the "Commissioner of Iatenu, Washington, D. 0. 

